RESEARCH DIRECTORATEPX–ON–028
REVISION 1 / PUBLIC EDITION
PARALLAX / Operating note
The display with four lines
The new display is less tidy. The fourth line records when the apparatus begins to matter.
Methods Office / instrument-room display review
SOURCE DATE 2026.07.16 / RELEASE DATE ABOVE
01 / Display amendment
The enclosure display now presents detected local onset, panel response, actuator command, and main load together. Each carries its own source label. The command channel remains the default clock reference for compatibility with prior files. Earlier events remain visible as negative offsets.
02 / Unavailable is a state
If a witness channel is disconnected or below its detection threshold, the display must identify that condition. It must not draw a zero-valued event. The time axis can carry an absent observation without pretending to know when it occurred.
03 / Retained views
The old two-channel display is retained with the original run record. It is no longer the default operating view. A later reader should be able to reconstruct why the first report looked persuasive. Correcting a display is not a reason to erase the circumstances of a mistake.